I am an astrobiologist, sci-fi geek, and professor of everything groovy. I write about science, culture, math, history, space, and science fiction. Perhaps like you, I'm seeking a greater understanding of the nature of life and asking myself why all of this really matters. Come with me, and we'll ask some questions together.
Showing posts with label stars. Show all posts
Showing posts with label stars. Show all posts
Friday, January 25, 2019
8k Wallpaper of Images from HST and ESO
Dr. Stuart Robbins created this wallpaper graphic from images from the public archives of the Hubble Space Telescope (HST) and the European Southern Observatory (ESO). Pretty darned incredible! I think I'll be using it for a while on my own desktop. You can find an 8k version on his website.
Monday, November 20, 2017
The Stars Overhead
As a communicator of science, I've been slowly building up my set of tools to use to share science in various ways. One things I've been wanting to do for a long time, but just haven't accomplished is producing videos of my field work, videos about science, and videos about the awe and wonder I feel in the presence of thinking about the universe and that I know many others likely share as well. So I've decided to start doing it! I'm going to be producing videos (hopefully one each week or two) to share these things.
The first one to get started with is a video about the stars you can see overhead at night. I'm still finding my voice and my style, but, if you have a moment, give it a watch and, please, let me know what you think.
Thursday, September 28, 2017
Stunning Timelapse Video from the Deck of a Cargo Ship: Night, Day, Stars, Storms
JeffHK has some incredible videos from his maritime adventures (and some awesome photos as well!). The video below is stellar, literally. It's a 4K vid of a 30-day timelapse from the deck of a cargo ship during JeffHK's watch as they make their way along the route from the Red Sea, to the Gulf of Aden, to the Indian Ocean, on to Colombo, then Malacca Strait, hitting Singapore, on to the South East China Sea, and, finally, Hong Kong. During the video, you can see the clouds coming and going, rains falling, thunderstorms raging, the stars and the Milky Way streaking along the heavens as the ship makes its way through the open ocean, and the process of docking and unloading/loading the cargo ship. It's a stunning video and one that you can just sit and watch and let yourself go with. Cheers!
Monday, March 6, 2017
A few quotes about stars to brighten your day
And to enliven your night!
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Credit: Christophe Lehenaff |
“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.”
― Carl Sagan, Cosmos
“A philosopher once asked, "Are we human because we gaze at the stars, or do we gaze at them because we are human?" Pointless, really..."Do the stars gaze back?" Now, that's a question.”
― Neil Gaiman, Stardust
"There is no easy way from the earth to the stars”
― Seneca
“There’s as many atoms in a single molecule of your DNA as there are stars in the typical galaxy. We are, each of us, a little universe.”
― Neil deGrasse Tyson, Cosmos
“It's lovely to live on a raft. We had the sky up there, all speckled with stars, and we used to lay on our backs and look up at them, and discuss about whether they was made or only just happened.”
― Mark Twain
“Mortal as I am, I know that I am born for a day. But when I follow at my pleasure the serried multitude of the stars in their circular course, my feet no longer touch the earth.”
― Ptolemy
"There is, though I do not know how there is or why there is, a sense of infinite peace and protection in the glittering hosts of heaven. There it must be, I think, in the vast and eternal laws of matter, and not in the daily cares and sins and troubles of men, that whatever is more than animal within us must find its solace and its hope.”
― H.G. Wells, The Island of Dr. Moreau
“The bright sun was extinguish'd, and the stars
Did wander darkling in the eternal space.”
― George Gordon Byron
Tuesday, October 11, 2016
Heavens Above a Mo'ai
Here's your awesome for the day! This picture is called "Orion Above Easter Island" and was taken by Yuri Beletsky on 5 October of this year. The image definitely makes me want to get my butt to Easter Island to see such a beautiful sight.
Monday, August 8, 2016
A Cosmobiologist's Bust in the Stars
I've been playing around with some graphic design lately using the program Affinity Designer by Serif. I used to do quite a bit of graphic design work when I was working for my father's sign business, Impact Signworks, back in Pennsylvania. Now I'm learning more graphic design to help make myself a better communicator of science. I took a photo of myself from the Famelab USA 3rd Season national final from this past May and created a bust of myself out of it. I figured I'd set it in some stars and share it here. I definitely have a long way to go, but it's a start.
Wednesday, August 3, 2016
Cosmic Traveler: Photo by A. Garret Evans
Today's APOD is this beautiful composite image of the Milky Way, Saturn, and some of our closest stellar neighbors over a stargazer's head in Maine. Some detail has been added to show where constellations and Saturn are at. Just looking at this picture makes me want to get out and go stargazing as soon as I possibly can. The heavens above have so much to offer, for sights and for thoughts.
Here's some info on the picture from APOD:
"What if you climbed up on a rock and discovered the Universe? You can. Although others have noted much of it before, you can locate for yourself stars, planets, and even the plane of our Milky Way Galaxy. All you need is a dark clear sky -- the rock is optional. If you have a camera, you can further image faint nebulas, galaxies, and long filaments of interstellar dust. If you can process digital images, you can bring out faint features, highlight specific colors, and merge foreground and background images. In fact, an industrious astrophotographer has done all of these to create the presented picture. All of the component images were taken early last month on the same night within a few meters of each other. The picturesque setting was Sand Beach in Stonington, Maine, USA with the camera pointed south over Penobscot Bay."
Friday, July 15, 2016
Crabby, Crab, Crabby, Crab, Crab.
There's a neutron star in the middle of the Crab Nebula, and that sucker is spinning 30 times every second!
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Image Credit: NASA, ESA, J. Hester (ASU), and M. Weisskopf (NASA / MSFC) |
The image of the Crab Nebula above comes from a composite of x-ray and optical light data from the Chandra X-ray Observatory and the Hubble Space Telescope. The video below shows the two different types of image (x-ray in blue, optical in red) in seven different sets of images from November 200 to April 2001. Those images have been looped many times to create a video, where you can see the swirling stellar winds moving through the nebula from the pulsar.
The Crab Nebula is beautiful, but that beauty can find new meaning when we consider the processes that formed the nebula and are affecting it today.
Here's a wider image showing the Crab Nebula in all of its glory. Let this one sink in...
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Crab Nebula (NASA) |
Sunday, June 19, 2016
Depths of Time in a Starry Night Image
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Image Credit: Brad Goldpaint |
The trees in the image are themselves quite old, dating back several thousands of years, with one tree named Methuselah dated to 4,847 years old and another tree (not yet named) dating back to 5,065 years in age (these trees are considered to be the oldest known living non-clonal organisms). Some of those bristlecone pines stood long before Galileo turned his telescopes to the heavens; those trees bathed in starlight generations before Eratosthenes of Cyrene calculated the circumference of the Earth and developed a science of chronology; and some of those trees opened their branches to the world before people started laying the stones that would become the Great Pyramid of Egypt.
Goldpaint's night scene also shows the planets Saturn and Mars, of which the curators of APOD remark are "seemingly attached to tree branches, but actually much farther in the distance... These planets formed along with the Earth and the early Solar System much earlier -- about 4.5 billion years ago." In my recent talk, "This Thing is Older Than Your Mom" (which I gave for the 3rd Season finale of Famelab USA), I spoke of the oldest solid materials to have formed in our solar system. The calcium-aluminum-rich inclusions (CAIs) and chondrules that can be found in some of the most primitive meteorites are materials that formed before the planets as we know them. Those materials and others in primitive meteorites have given us insight into the earliest processes in our solar system, including the timing of the formation of our planets. That's how we can say that Saturn and Mars are over 4.5 billion years in age. The lives of the bristlecone pines would seem just a short blink of time relative to the ages of Saturn, Mars, the Earth, and our solar system.
However, the oldest of the old, the most ancient of the ancient and venerated of the venerable, in this beautiful image are the stars stippling the night's sky and the band of white of our Milky Way Galaxy. At best, a single person may be able to see 2000 or so stars at night, yet we can see the illumination of our sky in a milky white band due to the illumination from hundreds of thousands of millions of other stars in our galaxy (most shining from somewhere near the plane of the galaxy). Some of those stars may be much younger than our own Sun and planets, while most of them are quite older. Sadly, a recent report in Science Advances estimates that at least 80% of the world's population lives under light polluted skies, so that as much as one third of the global human population can no longer see the Milky Way at night (we are truly stealing our history from our children by taking away the night's sky). While we should take a moment of pause and reflection at the fact that most people cannot observe the Milky Way, at least we can look on images like Goldpaint's picture at the top of this post and consider the depths of time that have passed on our planet, in our Solar System, and in the Milky Way Galaxy that surrounds us.
Thursday, June 16, 2016
Winners from the 2016 International Earth & Sky Photo Contest
Popping open Astronomy Picture of the Day on my laptop this morning revealed a fantastic image of the night's sky over Reine, Norway, with the yellowed lights of an island village tucked beneath glacially carved landforms while the night's sky above swirls, alight with the green ghostly glowing of the Aurora Borealis:
If, like me, you love to see fantastically beautiful images of the night's sky, then definitely check out this video showing off several of the best photos from this year's contest:
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